Roller and to tension the timing belt. Sharan 1.9 TDi PD Passat 1.9 TDi PD Audi A2 / A3 1.4 / 1.9 TDi PD. The belt tensioner roller has two holes in which the two pins of the Double-Pin. V159 /VAG 3387,/T10020 are inserted allowing them to turn the belt tensioner.
